201017003 « * 六、發明說明： »吒 【發明所屬之技術領域】 本發明係為一種滾珠螺桿之配件，尤指滚珠螺桿 ' 之迴流元件，該迴流元件係使用於具有鏈條之滚珠螺 - 桿。 【先前技術】 _ 按，精密機械中常有需要控制工作平台或加工元 件移動之設計，而為了能夠精確且小摩擦係數的掌控 移動進給量，該移動都利用滾珠螺桿進行精密的傳 動，而滾珠螺桿上設有一螺桿及一螺帽，為了減少摩 擦力的產生因此該螺桿與螺帽間使用有複數滾珠配 合，滾珠並必須能在螺帽内重複的循環滚動，該循環 滾動是利用設置循環系統於螺帽上的循環系統所完 ❹ 成。 請參閱第十一圖所示，係美國專利公告號第 US6089117號的專利案，該案係為一具有鏈條之滚珠 ' 螺桿，該滾珠螺桿主要由一螺桿及一螺帽所構成，於 ' 該螺桿及螺帽上分別設有相對且為螺旋狀之滚動溝及 滾動槽，該滚動溝及滚動槽係組成一負荷路徑，且該 滾動溝及該滾動槽間各設有一牙峰，該兩牙峰係組成 一導引空間，另該螺帽上設有一安裝槽連接該負荷路 4 201017003 m ~ 徑，而於該安裴槽中係設有一迴流元件，該迴流元件 » 气 5 0由端部依序設有一銜接部5 1、一彎曲部52以 及一中間部5 3，内部相對設有一銜接部流道5 4、 ' 一彎曲部流道5 5以及一中間部流道5 6，連接成一 " 迴流道5 0A ’該迴流道5 OA與該負荷路徑銜接形 成一循環路徑5 0 B，該迴流道5 0 A内徑之兩侧設 有兩導引槽5 7，該導引槽5 7之兩端係銜接該導引 • 空間，該銜接部流道5 4之導引槽5 7兩端係具有一 角度差’該角度差約為9 〇度，該循環路徑5 〇 b與 該導引槽5 7俾提供一滚動模組6 〇的滾動，該滾動 模組6 0係以一鏈條6 1供複數滾動件6 2設置組 成，側邊具有連結部6 3係容置於該導引槽5 7中， 且該鏈條6 1於該銜接部流道5 4時，因導引槽57 導引該結接部6 3，使鏈條6 χ於銜接部流道5 4產 _ 生扭轉’才能使該鏈條6 1順暢的通過彎曲部流道5 问憩點，該鏈條6 流道54就需扭轉約9〇度，故該鍵條“須於極短 距離内就需做大幅度的扭轉’所以該鏈條6 1如進行 多次扭轉後㈣成_條6 Q快速老化而斷裂，且於 扭轉時該鍵條6 1會與該導引槽5 7產生磨擦而影響 5 201017003 雜- 鏈條運行的順暢度；故此迴流元件之設計對於裝設有 •， 鍵條之滚珠螺桿還是不適用的，故還是有改良之必要。 ^ 【發明内容】 - 基於上述習知技術之問題點，本發明人經過研究 改良後，終有確能達成以下發明之目的之發明誕生。 即，本發明首要目的在於，設計出一種運用於裝 設有鏈條之滚珠螺桿的迴流元件。 ® 本發明次要目的在於，提升鏈條運行之順暢度， 以及延長鏈條之壽命。 為達上述之目的，本發明係為一種具迴流元件之 滾珠螺桿，包含： 一桿軸，其外緣設有一呈螺旋狀之滚動溝，該 滾動溝之間具有一牙峰； 一螺帽，其設有一供該桿軸套設之穿孔，該穿 孔内緣設有相對該滚動溝之滚動槽，該滾動槽係呈 螺旋狀，該滚動槽之間具有一牙峰，該桿軸與螺帽 ' 之牙峰係構成一導引空間，該滾動溝及滚動槽係構 < 成一負荷路徑，另該螺帽外緣設有連通該穿孔之安 裝槽； 滾動模組，包含一鏈條及若干滾動件，該鏈條 係設有供該滚動件設置之容置空間及位於該容置空 6 201017003 •署 間兩侧之連接部，該連接部於負荷路徑時係位於該 • » 導引空間中； 一迴流元件，其主要由兩銜接部、兩彎曲部、 ^ 及一中間部構成，其外形概呈门字型，該迴流元件 ' 之兩端為該銜接部，兩該銜接部一端與兩該彎曲部 之一端連接，兩該彎曲部另一端則與該中間部之一 端連接，該迴流元件内部從該銜接部開始依序設有 g —銜接流道、一彎曲流道、一中間流道、一·零曲流 醫 道及一銜接流道，該銜接流道、彎曲流道、中間流 道、彎曲流道及銜接流道係相互連接形成一迴流 道，該銜接流道之内徑係大於該滚動件之直徑，該 彎曲流道及中間流道之内徑係大於該鏈條之最大寬 度，而該銜接流道之内徑係小於該彎曲流道及中間 流道之内徑，且大於該滚動件之直徑；該銜接部係 Φ 插設於該安裝槽，使該迴流道與該負荷路徑銜接形 成一循環路徑，而該滚動模組係設置於該循環路徑 中；該兩銜接流道係各設有導引槽，該導引槽之一 端與該導引空間銜接，另一端則與該彎曲流道銜 " 接，該導引槽係包含第一導引槽、第二導引槽及第 三導引槽，該第二導引槽係位於該第一導引槽及第 三導引槽之間，該第一導引槽及第三導引槽各有一 端之寬度係大於該第二導引槽之寬度，如前述該第 7 201017003 二導引槽大於該第二導引槽之該端寬度係等於該彎 曲流道之内徑，而該第一導引槽及第三導引槽之另 一端係與該第二導引槽連接。 為達上述之目的，本發明係為一種具迴流元件之 滾珠螺桿，包含： 桿軸，其外緣設有一呈螺旋狀之滾動溝，該 滚動溝之間具有一牙峰； 螺帽，其設有-供該桿軸套設之穿孔，該穿 孔_設有相對該滾動溝之滾動槽，該滾動槽係呈 、+、該滾動槽之間具有一牙峰，該螺桿與螺帽 外緣設有連通該穿孔之安 =牙峰係構成—導引㈣，該滾動溝及滾動槽係構 成一負荷路徑，另該螺帽 裝槽； 你执士動模組’包含—鏈條及若干滾動件，該鍵條 '、叹供該滚動件設置之容置空間及位於該容置空 導之連接部，該連接部於負荷路徑時係位於該 導引空間中； 迴流7°件，其主要由兩銜接部、兩彎曲部、 之兩I:;::’其外形概呈门字塑，該迴流元件 之一端、接部，兩該銜接部一端與兩該彎曲部 、接兩該彎曲部另一端則與該中間部之一 8 201017003 端連接，該迴流元件内部從該銜接部開始依序設有 » η 一銜接流道、一彎曲流道、一中間流道、一、彎曲流 道及一銜接流道，該銜接流道、彎曲流道、中間流 道、彎曲流道及銜接流道係相互連接形成一迴流 ~ 道，該銜接流道之内徑係大於該滾動件之直徑，該 彎曲流道及中間流道之内徑係大於該鏈條之最大寬 度，而該銜接流道之内徑係小於該彎曲流道及中間 g 流道之内徑，且大於該滾動件之直徑；該銜接部係 插設於該安裝槽，使該迴流道與該負荷路徑銜接形 成一循環路徑，而該滾動模組係設置於該循環路徑 中；該兩銜接流道係各設有導引槽，該導引槽之一 端與該導引空間銜接，以引導該連接部進出迴流 道，另一端則與該彎曲流道銜接，該導引槽係包含 第一導引槽及第二導引槽，該第二導引槽之一端之 ❹ 寬度係大於該第一導引槽之寬度，且該端寬度係等 於該彎曲流道之内徑，而另一端係與該第二導引槽 連接。 綜所上述，該迴流元件的迴流道都具有約9 0 度的彎曲流道，而當鏈條進入迴流道時如不於彎曲 流道之前扭轉約9 0度是無法讓鏈條順利通過該彎 曲流道的，因為會與彎曲流道產生干涉，且鏈條會 9 201017003 因撓過大而斷裂，而習知技術的作法係將鏈條於彎 -， 曲流道前藉由導引槽的引導使鏈條扭轉約9 0度， 但此作法很容易使鏈條斷裂或運行不順暢，故本發 ' 明係反其道而行，係設計「銜接流道之内徑係大於 • 該滾動件之直徑並小於該彎曲流道及中間流道之内 徑，而該彎曲流道及中間流道之内徑係大於該鏈條 之最大寬度，另外該銜接流道設有導引槽，該導引 _ 槽之一端寬度係與該彎曲流道之内徑相等，而另一 _ 端係小於該彎曲流道之内徑」，故因鏈條本身於彎曲 流道及中間流道運行時，因該彎曲流道及中間流道 之内徑大於該鏈條之最大寬度，故該鏈條是不受拘 束之狀態可自由的扭轉。本發明於鏈條會扭轉處係 不設置導引槽來導引連接部，讓該鏈條自由的扭 轉，故不會使該連接部與導引槽產生干涉甚至斷 Φ 裂，而當鏈條進、出迴流道時，係藉由銜接流道所 設之導引槽將鏈條之連接部導引至正確位置，以利 連接部進入導引空間，相對的也使滚動模組進入負 荷路徑或進入迴流道更加順暢。 簡而言之，本發明係突破習知的設計方式，不 強制藉由導引槽使鏈條扭轉，而是讓鏈條自由的扭 轉，以降低鏈條與迴流道（或導引槽）產生干涉， 201017003 而降低鏈條的順暢度及使用壽命。 -λ 為求清楚說明本發明之實施特點，以下說明本發 ' 明較習用進步之處及實用方式： • 本發明之迴流元件係大幅降低鏈條於運行時與迴 流道產生干涉的問題發生，相對的提升滾珠螺桿於運 行的順暢度，且也延長滾珠螺桿之使用壽命。 為了更進一部瞭解本發明之特徵及技術内容，請 參閱以下有關本發明之實施方式說明及圖式，然而此 實施方式及圖式僅供說明及參考用，而非用以對本發 明做任何限制者。 【實施方式】 ❹ 首先請參閱第一圖、第二A、Β圖、第三至六圖 所示，本發明係為一種具迴流元件之滾珠螺桿，係包 含： 一桿軸1，其外緣設有一呈螺旋狀之滚動溝1 1，該滚動溝1 1之間具有一牙峰1 1 1 ; 一螺帽2，其設有一供該桿軸1套設之穿孔2 2，該穿孔2 2内緣設有相對該滾動溝1 1之滚動 槽（未顯示），該滚動槽係呈螺旋狀，該滚動槽之間 11 201017003 .. 具有一牙峰（未顯示），該桿軸1與螺帽2之牙峰係 構成一導引空間（未顯示），該滾動溝1 1及滾動槽 係構成一負荷路徑（未顯示），另該螺帽2外緣設有 連通該穿孔22之安裝槽2 1 ; 滾動模組4，包含一鏈條4 1及若干滾動件4 2，該鏈條4 1係設有供該滾動件4 2設置之容置 二間4 1 2及位於該容置空間4 ^ 2兩侧之連接部 ❹ 4 1 1，該連接部4 1 1於負荷路徑時係位於該導 引空間中； -迴流元件3，其主要由第一構件3A及第二 構件3 B所組成，該第—構件3A及第二構件3 b 個別設有兩半銜接部31A(31B)、兩半f曲部 32A(32B)、及一半中間部 33a(33b)，201017003 « * VI. Description of the invention: »吒 [Technical Field of the Invention] The present invention is an accessory for a ball screw, particularly a ball screw's reflow element, which is used for a ball screw-rod having a chain. [Prior Art] _ Press, precision machinery often needs to control the design of the working platform or the movement of the processing components, and in order to control the moving feed amount with precise and small friction coefficient, the movement uses the ball screw for precise transmission, and the ball A screw and a nut are arranged on the screw. In order to reduce the friction, a plurality of balls are used between the screw and the nut, and the ball must be repeatedly cycled in the nut. The cycle is to use the setting cycle. The system completes the circulation system on the nut. Referring to the patent application No. US6089117, which is a ball-shaped screw having a chain, the ball screw is mainly composed of a screw and a nut, The screw and the nut are respectively provided with a relatively spiral spiral groove and a rolling groove, and the rolling groove and the rolling groove form a load path, and each of the rolling groove and the rolling groove is provided with a tooth peak. The two peaks form a guiding space, and the nut is provided with a mounting groove for connecting the load path 4 201017003 m ~ diameter, and a reflow element is arranged in the ampoule, the reflow element » gas 5 0 An engaging portion 5 1 , a curved portion 52 and an intermediate portion 53 are sequentially disposed from the end portion, and an engaging portion flow passage 5 4 , a curved portion flow passage 5 5 and an intermediate portion flow passage 56 are disposed opposite to each other. , connected to a " return channel 50A' the return channel 5 OA and the load path to form a circulation path 5 0 B, the return channel 50 A is provided with two guiding grooves 5 7 on both sides of the inner diameter The guiding groove 5 is connected to both ends of the guiding groove 57, and the guiding groove 5 of the connecting portion flow channel 5 4 7 The two ends have an angular difference of 'the angle difference is about 9 degrees, and the circulation path 5 〇b and the guiding groove 57 7 provide a rolling module 6 〇 rolling, the rolling module 6 0 A plurality of rolling elements 6 2 are arranged in a chain 61, and the side has a connecting portion 63 to be received in the guiding groove 57, and the chain 6 1 is in the connecting portion flow path 5 4 The guiding groove 57 guides the connecting portion 63, so that the chain 6 is twisted on the connecting portion flow path 5 4 to make the chain 6 1 smoothly pass through the curved portion flow path 5, and the chain 6 flows. The track 54 needs to be twisted by about 9 degrees, so the key strip "must be greatly twisted in a very short distance". Therefore, the chain 6 1 is broken after being repeatedly twisted (four) into _ strip 6 Q. And when the twisting, the key strip 6 1 will rub with the guiding groove 57 to affect the smoothness of the operation of the 5 201017003 miscellaneous chain; therefore, the design of the reflow element is not for the ball screw of the key strip; Applicable, there is still a need for improvement. ^ [Summary] - Based on the above-mentioned problems of the prior art, the inventors have improved through research The invention has finally been achieved for the purpose of achieving the following invention. That is, the primary object of the present invention is to design a reflow element for a ball screw equipped with a chain. The secondary object of the present invention is to improve the operation of the chain. Smoothness, and extending the life of the chain. For the above purposes, the present invention is a ball screw with a reflow element, comprising: a shaft having a spiral groove on the outer edge thereof, the rolling groove a nut having a tooth; a nut having a through hole for the shaft, the inner edge of the hole being provided with a rolling groove opposite to the rolling groove, the rolling groove being spiral, the rolling groove There is a tooth peak between the shaft and the nut peak of the nut constituting a guiding space, the rolling groove and the rolling groove structure < forming a load path, and the outer edge of the nut is provided with the perforation The installation slot; the rolling module comprises a chain and a plurality of rolling elements, the chain is provided with a receiving space for the rolling element and a connecting portion on the side of the receiving space 6 201017003 • the connection Load path Located in the • » guiding space; a reflow element, which is mainly composed of two connecting portions, two bending portions, ^ and an intermediate portion, the shape of which is generally gate-shaped, and the two ends of the reflowing element are connected One end of the connecting portion is connected to one end of the two curved portions, and the other end of the two curved portions is connected to one end of the intermediate portion. The inside of the reflow element is sequentially provided with a g-connecting flow path from the connecting portion. a curved flow channel, an intermediate flow channel, a zero-curved medical channel, and a connecting flow channel, the connecting flow channel, the curved flow channel, the intermediate flow channel, the curved flow channel and the connecting flow channel are connected to each other to form a return channel. The inner diameter of the connecting flow channel is larger than the diameter of the rolling member, and the inner diameter of the curved flow channel and the intermediate flow channel is greater than the maximum width of the chain, and the inner diameter of the connecting flow channel is smaller than the curved flow channel and The inner diameter of the intermediate flow passage is larger than the diameter of the rolling member; the connecting portion Φ is inserted into the mounting groove, so that the return passage is engaged with the load path to form a circulation path, and the rolling module is set In the loop path; the two titles Each of the connecting channels is provided with a guiding groove, one end of the guiding groove is connected with the guiding space, and the other end is connected with the curved flow channel, the guiding groove includes a first guiding groove, a second guiding slot and a third guiding slot are located between the first guiding slot and the third guiding slot, and the first guiding slot and the third guiding slot each have one end The width is greater than the width of the second guiding groove. The width of the second guiding groove is greater than the inner diameter of the second guiding groove, and the first guiding groove is And the other end of the third guiding slot is connected to the second guiding slot. For the above purposes, the present invention is a ball screw having a reflow element, comprising: a shaft having a spiral-shaped rolling groove at an outer edge thereof; a rolling peak between the rolling grooves; a nut; Providing a perforation for the shaft of the rod, the perforation_ is provided with a rolling groove opposite to the rolling groove, the rolling groove is formed, +, there is a tooth peak between the rolling grooves, and the outer edge of the screw and the nut An anti-toothed line structure-guide (four) is provided to connect the perforation, the rolling groove and the rolling groove form a load path, and the nut is slotted; the steering module includes a chain and a plurality of rolling elements , the key bar ', sighs the accommodating space provided by the rolling member and the connecting portion at the accommodating air guide, the connecting portion is located in the guiding space when the load path is; the reflow 7° piece, the main The two connecting portions, the two curved portions, and the two I:;::' are generally shaped like a door, and one end of the returning element, the connecting portion, and one end of the connecting portion and the two curved portions are connected to the curved portion. The other end is connected to one of the intermediate parts 8 201017003, and the reflow element is internally The department starts with: η a connecting flow channel, a curved flow channel, an intermediate flow channel, a curved flow channel and a connecting flow channel, the connecting flow channel, the curved flow channel, the intermediate flow channel, and the curved flow channel And connecting the flow channels to each other to form a recirculation channel, the inner diameter of the connecting flow channel is larger than the diameter of the rolling member, and the inner diameter of the curved flow channel and the intermediate flow channel is greater than the maximum width of the chain, and the connection The inner diameter of the flow passage is smaller than the inner diameter of the curved flow passage and the intermediate g flow passage and larger than the diameter of the rolling member; the engaging portion is inserted into the installation groove, and the return passage is engaged with the load path to form a a circulation path, wherein the rolling module is disposed in the circulation path; the two connecting flow channels are each provided with a guiding groove, and one end of the guiding groove is engaged with the guiding space to guide the connecting portion to enter and exit the return channel The other end is connected to the curved flow channel, and the guiding groove comprises a first guiding groove and a second guiding groove, wherein a width of one end of the second guiding groove is greater than a width of the first guiding groove And the width of the end is equal to the inner diameter of the curved flow path Lines and the other end connected to the second guide groove. In the above, the return passage of the reflow element has a curved flow passage of about 90 degrees, and when the chain enters the return passage, if it is twisted by about 90 degrees before bending the flow passage, the chain cannot pass through the curved flow passage smoothly. Because it will interfere with the curved flow channel, and the chain will break due to excessive deflection, and the conventional technique is to bend the chain in front of the curved channel, and the chain is twisted by the guide groove. 90 degrees, but this method is very easy to break the chain or run smoothly, so the hairline is in the opposite direction, the design is "the inner diameter of the connecting channel is greater than • the diameter of the rolling member is smaller than the bending The inner diameter of the flow channel and the intermediate flow channel, wherein the inner diameter of the curved flow channel and the intermediate flow channel is greater than the maximum width of the chain, and the connecting flow channel is provided with a guiding groove, and the width of one end of the guiding channel is The inner diameter of the curved flow path is equal to the inner diameter of the curved flow path, and the curved flow path and the intermediate flow path are caused by the chain itself operating in the curved flow path and the intermediate flow path. The inner diameter is greater than the maximum width of the chain, so Chain is not subject to arrest the bundle freely twist state. The present invention does not provide a guiding groove to guide the connecting portion when the chain is twisted, so that the chain can be twisted freely, so that the connecting portion does not interfere with the guiding groove or even breaks the Φ, and when the chain enters and exits When the return path is used, the connecting portion of the chain is guided to the correct position by the guiding groove provided by the connecting flow channel, so that the connecting portion enters the guiding space, and the rolling module is also brought into the load path or into the reflow. The road is smoother. In short, the present invention breaks through the conventional design method, and does not force the chain to be twisted by the guiding groove, but allows the chain to be freely twisted to reduce the interference between the chain and the return channel (or the guiding groove), 201017003 It reduces the smoothness and service life of the chain. - λ In order to clearly illustrate the implementation features of the present invention, the following description of the present invention is a matter of improvement and practical use: • The reflow element of the present invention greatly reduces the problem that the chain interferes with the return flow during operation, and The improved ball screw is smooth in operation and also extends the life of the ball screw. For a better understanding of the features and technical aspects of the present invention, reference should be made to the description of the embodiments of the invention. By. [Embodiment] ❹ First, referring to the first figure, the second A, the drawing, and the third to sixth figures, the present invention is a ball screw with a reflow element, comprising: a shaft 1 having an outer edge A spiral rolling groove 1 1 is provided, and a rolling peak 1 1 1 is formed between the rolling grooves 1 1 ; a nut 2 is provided with a through hole 2 2 for the shaft 1 to be sleeved. 2 2 is provided with a rolling groove (not shown) opposite to the rolling groove 1 1 , the rolling groove is spiral, and the rolling groove 11 201017003 .. has a tooth peak (not shown), The tooth peaks of the shaft 1 and the nut 2 form a guiding space (not shown), the rolling groove 11 and the rolling groove form a load path (not shown), and the outer edge of the nut 2 is provided with the connection. The mounting slot 2 1 of the perforation 22; the rolling module 4 includes a chain 4 1 and a plurality of rolling elements 4 2 , the chain 4 1 is provided with two compartments 4 1 2 for the rolling element 42 and located therein a connecting portion 1 4 1 1 on both sides of the accommodating space 4 ^ 2, the connecting portion 4 1 1 is located in the guiding space in the load path; - a reflow element 3 mainly composed of the first member 3A and 3 B consisting of two components, the first - and the second member 3A is provided with individual member 3 b halves engagement portion 31A (31B), (32B), the intermediate portion and the two halves of a half f curved portion 32A 33a (33b),
其外形概呈Π字型，該第—構件3 A及第二構件3 B之兩端為該半銜接部3ia(31b)i該半銜 接部3 1A (3 1B)-端與兩該半彎曲部μα (32B)之-端連接’兩該半料部3 2a q 2 B)另一端則與該半中間部3 3 A (3 3B)連 接之一端連接’且該第-構件3A及第二構件3 b 個別從該半銜接部31 A (3 ^)_依序設有 一半銜接流道311A(311B)、—㈣曲流道 3 2 1 A ( 3 2 1 B )、-半中間流道 3 3 1 A ( 3 12 201017003 31Β)、-半彎曲流道321α(32ιβ)及一 半銜接流道311Α(31ιβ)，該—半銜接流道 311Α(31 1Β)、一半彎曲流道 32ια(3 21Β)、一半中間流道 331Α (33ιβ)、一 Μ^Μ21Α(321Β)及—半銜接流道 3 1 1 A( 3 1 1 B)係相互連接形成一半迴流道， ΦThe shape of the first member 3 A and the second member 3 B is the semi-engaging portion 3ia (31b) i, the semi-engaging portion 3 1A (3 1B)-end and the two semi-bending portions The end of the portion μα (32B) is connected to the two ends of the half portion 3 2a q 2 B, and the other end is connected to one end of the half intermediate portion 3 3 A (3 3B) and the first member 3A and the second portion The member 3b is provided with a half of the connecting flow path 311A (311B), - (4) curved flow path 3 2 1 A (3 2 1 B ), and a semi-intermediate flow path from the semi-joining portion 31 A (3 ^)_. 3 3 1 A ( 3 12 201017003 31Β), - semi-curved flow path 321α (32ιβ) and half of the connecting flow path 311Α (31ιβ), the semi-joining flow path 311Α (31 1Β), half curved flow path 32ια (3 21Β) ), half of the intermediate flow passages 331Α (33ιβ), one Μ^Μ21Α(321Β), and the semi-connected flow passages 3 1 1 A( 3 1 1 B) are interconnected to form a half return passage, Φ
而該第-構件3 A與第二構件3 B係相對組合成該 迴流元件3後，兩該半銜接部3 1 a ( 3丄B)係 形成該銜接部3 1，兩該半彎曲部3 2a (32B) 係形成該彎曲部3 2，兩該半中間部3 3 a ( 3 3 B)係形成該中間部3 3，其外形概呈门字型；該 迴流元件3之兩端為該銜接部3 1，兩該銜接部3 1一端與兩該f曲部32之一端連接，兩該彎曲部 3 2另一端則與該中間部3 3之一端連接，該迴流 元件3内部從該銜接部3 1開始依序設有一銜接流 道3 1 1、一彎曲流道3 2 1、一中間流道3 3 1、 一彎曲流道3 2 1及一銜接流道3 1 1，該銜接流 道3 1 1、彎曲流道3 2 1、中間流道3 3 1、彎 曲流道3 2 1及銜接流道3 1 1係相互連接形成_ 迴流道，該銜接流道3 1 1之内徑係大於該滚動件 4 2之直徑，該彎曲流道3 2 1及中間流道3 3 1 之内徑D係大於該鏈條4 1之最大寬度R，而該銜 13 201017003 接流道3 1 1之内徑d係小於該彎曲流道及中間流 • 鲁 道之内徑D，且大於該滾動件4 2之直徑；該銜接 部3 1係插設於該安裝槽2 1，使該迴流道與該負 ' 荷路徑銜接形成一循環路徑，而該滾動模組4係設 ^ 置於該循環路徑中；該兩銜接流道3 1 1係各設有 導引槽3 4，該導引槽3 4之一端與該導引空間銜 接，另一端則與該彎曲流道3 2 1銜接，該導引槽 p 34係包含第一導引槽341、第二導引槽342 及第三導引槽343，該第二導引槽3 42係位於 該第一導引槽341及第三導引槽343之間，該 第一導引槽34 1及第三導引槽3 43各有一端之 寬度係大於該第二導引槽3 4 2之寬度，如前述該 第三導引槽3 4 3大於該第二導引槽3 4 2之該端 寬度係等於該彎曲流道3 2 1之内徑，而該第一導 ❹ 引槽341及第三導引槽34 3之另一端係與該第 二導引槽3 4 2連接。 3外請參閱第七A、B、C、D圖、第八圖及 第九圖所示，本發明之兩該導引槽3 4係為一變截 面的設計（如第七A、B、c、d圖所示），兩該導 引槽3 4之構型近似將兩個漏斗口徑小的地方相互 銜接’在將兩該漏斗剖成科，而此兩該半漏斗就 201017003 與兩該導引槽3 4近似。再請參閱第八圖所示，該 圖係說明導引槽3 4如何導引鏈條4 1之連接部4 1 1，當鏈條4 1運行至第三導引槽3 4 3時，因 為該第三導引槽3 4 3為一開口由大至小的變截面 設計（開口大的係與彎曲流道3 2 1連接），故該連 接4 11部會順著第三導引槽3 4 3漸縮截面被引 導進入該第二導引槽3 4 2 ’再者，再進入第一導 φ 引槽3 4 1 ’而後，再進入桿轴1與螺帽2之導引 空間；而鏈條4 1進入該迴流道的方式係藉由該第 一導引槽3 4 1的變截面設計先將該連接部4工工 導引進入第二導引槽342，再進入第三導引槽3 4 3 ’再者’進入彎曲流道3 2 1及中間流道3 3 1再回到彎曲流道3 2 1，而鏈條3 4於彎曲流道 3 2 1及中間流道3 3 1是不受任何拘束的，可以 # 自由的扭轉及轉向，而後再進入銜接流道3ii， 且藉由該導引槽3 4將鏈條4 1順利引導進入該負 荷路徑以完成迴流。另外第一導引槽34 1之變戴 面設計主要是可吸收該第一導引槽3 4 1與導引空 間之間配合的誤差，使第一導引槽3 4 i與導％空 間銜接處不會有斷差產生。最後請參閱第九圖所 示，為了讓鏈條4 1於扭轉時更為順暢且不受拘 束，本發明之鏈條4 1之長度可設計為小於或等於 15 201017003 •— …一該銜接流道3 1 1、兩該彎曲流道3 2 1及一該 中間路徑3 3 1之加總長度，而此設計可使鍵條4 1之一端W進入一端的銜接流道3丄工時，該鏈條 4 1之另一端N已離開另一端銜接流道3 1 1，如 此一來，該鏈條4 1之一端為自由端，故該端可解 決鏈條4 1過度扭轉的問題，使鏈條4工循環的更 為順暢，最重要的是使鏈條4丄壽命延長。 再請參閱第十圖所示，為本發明另一實施例， 該實施例與上一實施例主要不同點為該導引槽3 4 A的設計，該導引槽3 4A係包含第一導引槽3 4 1A及第二導引槽342A，該第二導引槽342 A之一端之寬度τ係大於該第一導引槽3 4丄入之 寬度h，且該端係等於該彎曲流道321之内徑 故 D，而另一端之係與該第一導引槽34i a連接。 而本實施例之第-導引槽341A與導引空間的銜 接處無變戴面的設計’這樣的料也是可以達到第 一實施例的功效，因為只要將第一導 與導引空間的尺寸設計好且加工準確，兩者銜接處 就不會產生斷差，故也不會引響鏈條3 4之 暢度。 貝 16 201017003 最後，本發明雖然強調只於銜流道設有導引 槽，但對於尺寸較小的滚珠螺桿之迴流元件來說， 該迴流元件的銜接流道就會變短，相對的可供該導 引槽設置的長度就會稍嫌不足，因為該導引槽之設 計為變截面之設計，故長度如果太短勢必會引響導 引該鏈條之連接部之效果；故對於銜接流道較短的 迴流元件來說，該導引槽之一端係可延伸至該彎曲 流道，而該導引槽設置於該彎曲流道的最佳長度為 該彎曲流道總長度的0. 5倍長度，如此一來，就可 提升該導引槽的導引功能，如超出這個範圍可能會 影響鏈條運行。 綜所上述，本發明係大幅提升滚動模組於迴劉元 件之迴流道運行的順暢度，且一併提升鍊條的使用壽 命，所以本發明之『具有產業之可利用性』應已毋庸 置疑，除此之外，在本案實施例所揭露出的特徵技術， 於申請之前並未曾見於諸刊物，亦未曾被公開使用， 不但具有如上所述功效增進之事實，更具有不可輕忽 的附加功效，是故，本發明的『新穎性』以及『進步 性』都已符合專利法規，爰依法提出發明專利之申請， 祈請惠予審查並早曰賜准專利，實感德便。 17 201017003 以上所述實施例之揭示係用以說明本發明，並非 • » 用以限制本發明，故舉凡數值之變化與等效元件之置 換，仍應隸屬本發明之範疇。After the first member 3 A and the second member 3 B are relatively combined into the reflow element 3, the two semi-engaging portions 3 1 a ( 3丄B) form the engaging portion 3 1, and the semi-bend portion 3 2a (32B) forms the curved portion 32, and the intermediate portion 3 3 a (3 3 B) forms the intermediate portion 33, and its outer shape is generally a gate-shaped shape; both ends of the reflow element 3 are One end of the connecting portion 3 1 is connected to one end of the two curved portions 32, and the other end of the curved portion 3 2 is connected to one end of the intermediate portion 33, and the inside of the reflow element 3 is connected from the end The portion 3 1 is sequentially provided with a connecting flow path 3 1 1 , a curved flow path 3 2 1 , an intermediate flow path 3 3 1 , a curved flow path 3 2 1 and a connecting flow path 3 1 1 . The passage 3 1 1 , the curved flow passage 3 2 1 , the intermediate flow passage 3 3 1 , the curved flow passage 3 2 1 and the connecting flow passage 3 1 1 are connected to each other to form a return passage, and the inner diameter of the connecting flow passage 3 1 1 The diameter of the rolling element 4 2 1 and the intermediate flow channel 3 3 1 is greater than the maximum width R of the chain 4 1 , and the bearing 13 201017003 is connected to the flow path 3 1 The inner diameter d of 1 is smaller than the curved flow path and The inner diameter D of the rudder is larger than the diameter of the rolling member 42; the engaging portion 3 1 is inserted into the mounting groove 2 1, so that the return channel and the negative load path are connected to form a circulation path. The rolling module 4 is disposed in the circulation path; the two connecting channels 3 1 1 are each provided with a guiding groove 34, and one end of the guiding groove 34 is connected with the guiding space. The other end is connected to the curved flow channel 3 2 1 , and the guiding groove p 34 includes a first guiding groove 341 , a second guiding groove 342 and a third guiding groove 343 . The second guiding groove 3 42 The first guiding slot 341 and the third guiding slot 3 43 each have a width greater than the second guiding slot 3 4 . a width of 2, as described above, the third guiding groove 343 is larger than the inner width of the second guiding groove 342, which is equal to the inner diameter of the curved flow path 321, and the first guiding groove The other end of the 341 and the third guiding groove 34 3 is connected to the second guiding groove 342. 3, please refer to the seventh A, B, C, D, eighth and ninth diagrams, the two guiding grooves 34 of the present invention are designed with a variable cross section (such as the seventh A, B, c, d shows), the configuration of the two guiding grooves 34 is similar to the two small funnels with small diameters to join each other 'in the two funnels into sections, and the two half funnels 201017003 and two The guiding groove 34 is approximated. Referring to FIG. 8 again, the figure shows how the guiding groove 34 guides the connecting portion 4 1 of the chain 4 1 , and when the chain 4 1 runs to the third guiding slot 3 4 3 , because the first The three guiding grooves 3 4 3 are a large-to-small variable cross-section design (the large opening is connected to the curved flow channel 3 2 1), so the connection 4 11 will follow the third guiding groove 3 4 3 The tapered section is guided into the second guiding groove 3 4 2 ', and then enters the first guiding φ guiding groove 3 4 1 ', and then enters the guiding space of the shaft 1 and the nut 2; and the chain 4 The method of entering the return channel is to guide the connecting portion 4 into the second guiding slot 342 and then enter the third guiding slot 34 by the variable cross-sectional design of the first guiding slot 341. 3 'further' enters the curved flow path 3 2 1 and the intermediate flow path 3 3 1 returns to the curved flow path 3 2 1 , and the chain 3 4 is not affected by the curved flow path 3 2 1 and the intermediate flow path 3 3 1 Any restraint can be freely twisted and turned, and then enters the connecting flow path 3ii, and the chain 4 1 is smoothly guided into the load path by the guiding groove 34 to complete the reflow. In addition, the variable guiding surface design of the first guiding slot 34 1 is mainly capable of absorbing the error of the cooperation between the first guiding slot 341 and the guiding space, so that the first guiding slot 3 4 i is connected with the guiding space There will be no breaks. Finally, please refer to the ninth figure, in order to make the chain 41 1 smoother and unconstrained when twisting, the length of the chain 4 1 of the present invention can be designed to be less than or equal to 15 201017003 • - a connecting channel 3 1 1 , the total length of the curved flow path 3 2 1 and the intermediate path 3 3 1 , and the design enables one end W of the key strip 41 to enter the connecting flow path 3 at one end, the chain 4 The other end N of 1 has left the other end to connect the flow channel 3 1 1. Thus, one end of the chain 4 1 is a free end, so the end can solve the problem of excessive twisting of the chain 4 1 and make the chain 4 cycle more. For smoothness, the most important thing is to extend the life of the chain 4丄. Referring to FIG. 10 again, in another embodiment of the present invention, the main difference between the embodiment and the previous embodiment is the design of the guiding slot 3 4 A, and the guiding slot 3 4A includes the first guiding. The groove 3 4 1A and the second guiding groove 342A, the width τ of one end of the second guiding groove 342 A is greater than the width h of the first guiding groove 34, and the end is equal to the curved flow The inner diameter of the channel 321 is D, and the other end is connected to the first guiding groove 34i a. However, the design of the first guiding groove 341A and the guiding space at the junction of the guiding space is not the same as that of the first embodiment, because the size of the first guiding and guiding space is only required. Designed and processed accurately, there will be no gaps between the two joints, so it will not ignite the smoothness of the chain. Bay 16 201017003 Finally, although the invention emphasizes that only the guiding channel is provided with the guiding groove, for the reflow element of the smaller ball screw, the connecting flow path of the reflow element becomes shorter and relatively available. The length of the guiding groove is slightly insufficient, because the design of the guiding groove is a variable cross-section design, so if the length is too short, the effect of guiding the connecting portion of the chain will be induced; therefore, for the connecting flow path 5倍倍。 The length of the curved flow channel is 0.5 times the total length of the curved flow channel, the optimal length of the curved flow channel is 0.5 times. The length, in this way, can improve the guiding function of the guiding slot, and if it exceeds this range, the chain operation may be affected. In view of the above, the present invention greatly improves the smoothness of the rolling module running on the return channel of the Liu component, and improves the service life of the chain together, so the "industrial availability" of the present invention should be unquestionable. In addition, the feature technology disclosed in the embodiment of the present invention has not been seen in publications before the application, nor has it been used publicly, not only has the fact that the effect is improved as described above, but also has an additional effect that cannot be neglected. Therefore, the "novelty" and "progressiveness" of the present invention have been in compliance with the patent regulations, and the application for invention patents has been filed according to law, and it is prayed for review and early granting of patents. 17 201017003 The above description of the embodiments is intended to be illustrative of the present invention and is not intended to limit the scope of the present invention.
18 201017003 .， 【圖式簡單說明】 第一圖為本發明具迴流元件之滾珠螺桿的立體 圖。 4 第二A圖為本發明迴流元件第一構件之立體圖。 第二B圖為本發明迴流元件第二構件之立體圖。 第三圖為本發明第一構件與滚動模組及桿轴配合 示意圖。 ❹ 第四圖為本發明第二構件與滾動模組配合示意 圖。 第五圖為本發明迴流元件之側視圖。 第六圖為第五圖E-E剖視圖。 第七A圖為第六圖a — A剖視圖。 第七B圖為第六圖b — b剖視圖。 第七C圖為第六圖C—c剖視圖。 ® 第七D圖為第六圖D — D剖視圖。 第八圖為本發明導引槽與鏈條之連接部配合之示 意圖。 第九圖為本發明鏈條與迴流道之長度設計說明 圃0 第十圖為本發明另一實施力之第五圖E — E剖視 第十一圖為習知技術之迴流元件及滾動模組配合 201017003 示意圖。18 201017003 ., BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a perspective view of a ball screw with a reflow element of the present invention. 4 The second A is a perspective view of the first member of the reflow element of the present invention. Figure 2B is a perspective view of the second member of the reflow element of the present invention. The third figure is a schematic view of the first member of the present invention in cooperation with the rolling module and the shaft. ❹ The fourth figure is a schematic diagram of the cooperation between the second component and the rolling module of the present invention. The fifth figure is a side view of the reflow element of the present invention. The sixth picture is a cross-sectional view of the fifth diagram E-E. Figure 7A is a cross-sectional view of the sixth figure a - A. Figure 7B is a cross-sectional view of the sixth figure b-b. The seventh C is a cross-sectional view of the sixth figure C-c. ® Figure 7D is a cross-sectional view of the sixth figure D-D. The eighth figure is a schematic view of the engagement of the guide groove and the chain of the present invention. The ninth figure is the design description of the length of the chain and the return channel of the present invention. The tenth figure is the fifth embodiment of the present invention. FIG. E - E is a cross-sectional view. The eleventh figure is a reflow element and a rolling module of the prior art. Coordinate with the 201017003 schematic.
【主要元件符號說明】 (習知技術） 5 0 迴流元件 5 1 銜接部 5 2 彎曲部 5 3 連接部 5 4 銜接部流道 5 5 彎曲部流道 5 6 連接部流道 5 7 導引槽 5 0A 迴流道 5 0 B 循環路徑 6 0 滾動模組 6 1 鏈條 6 2 滚動件 6 3 連結部[Description of main component symbols] (Prior Art) 5 0 Reflow element 5 1 Connection part 5 2 Bending part 5 3 Connection part 5 4 Connection part flow path 5 5 Bending part flow path 5 6 Connection part flow path 5 7 Guide groove 5 0A Return path 5 0 B Cycle path 6 0 Rolling module 6 1 Chain 6 2 Roller 6 3 Connection
(本發明） 1 桿轴 1 1 滾動溝 111 牙峰 2 螺帽 2 1 安裝槽 2 2 穿孔 3 迴流元件 3 1 銜接部 3 1 1 銜接流道 3 2 彎曲部 3 2 1 彎曲流道 3 3 中間部 3 3 1 中間流道 20 201017003 3 A 第一構件 3 1 A 半銜接部 3 2 A 半彎曲部 3 3 A 半中間部 3 B 第二構件 3 1 B 半銜接部 3 2 B 半彎曲部 3 3 B 半中間部 3 4 導引槽 3 4 2 第二導引道 4 滚動模組 4 1 1 連接部 4 2 滾動件 D d 内徑 3 4 A 導引槽 3 4 1 A 第一導引槽(Invention) 1 shaft 1 1 rolling groove 111 tooth peak 2 nut 2 1 mounting groove 2 2 perforation 3 reflow element 3 1 engagement portion 3 1 1 engagement flow path 3 2 bending portion 3 2 1 curved flow path 3 3 middle Part 3 3 1 Intermediate flow passage 20 201017003 3 A First member 3 1 A Semi-engagement portion 3 2 A Half-bend portion 3 3 A Half intermediate portion 3 B Second member 3 1 B Semi-joining portion 3 2 B Half-bend portion 3 3 B Half intermediate part 3 4 Guide groove 3 4 2 Second guide track 4 Rolling module 4 1 1 Connection part 4 2 Roller D d Inner diameter 3 4 A Guide groove 3 4 1 A First guide groove
311A 半銜接流道 3 2 1 A 半彎曲流道 3 3 1 A 半中間流道 3 1 1 B 半銜接流道 3 2 1 B 半彎曲流道 3 3 1 B 半中間流道 341 第一導引道 343 第三導引道 4 1 鏈條 4 12 容置空間 T、h、t、R 寬度 W'N 鏈條端部 3 4 2 A 第二導引槽 21311A semi-connected flow channel 3 2 1 A semi-curved flow channel 3 3 1 A semi-intermediate flow channel 3 1 1 B semi-connected flow channel 3 2 1 B semi-curved flow channel 3 3 1 B semi-intermediate flow channel 341 first guide Lane 343 Third guiding lane 4 1 Chain 4 12 accommodating space T, h, t, R Width W'N Chain end 3 4 2 A Second guiding groove 21